Metal-covered pneumatic tire



April 16, 1929- N. GHERASSIMOFF 9, 8

METAL COVERED PNEUMATIC TIRE v I Filed JulgyplQ. 192'! 2 Sheets-Sheet 1- April 16, 1929- N. GHERASS IMOFF 1,709,718

METAL COVERED PNEUMATIC TIRE Filed July 19, 1927 2 Sheets-Sheet 2 Patented Apr. 16, 15 929.

* Dist-TEE; srarss I mane.-

NICOLAS GHEBASSIMOFF, or LE VESINET, FRANCE, ASSIGNOR or ONE-HALF To nuennnnivocirn, or rearsrnancn; A

iirE'rAn-ooVEn-En PNEUMATIC TIRE.

Application filed July 19, 1927, Serial no; 206,965, and in F raiicefianuary 24, 1927.

The present invention relates to improve ments upon the ';metal covered pneumatic tire disclosed in my U. S. Patent No. 1,632,731, dated June 14, 1927, the ob ect of these improvements being to simplify the construction of said tire and hence tolower the cost of manufacture, to eliminatev various drawbacks which have been revealed in The tire according to my said patent is constituted by a series of flexible strips which are assembled together in order to form an outer cover forthe inner tube without the use of any rubber outer cover such as those These 'inetallic strips, V

tread-band, this latter is formed by pressed plates of small height'having ribs Which 'constitutefthetread-band proper, each strip commonly utilized. overlap eachother, are provided with bosses Which form the tread-band, are furthermore reinforced by means of a rubber bandcovered with fabric at their ends which hook into the rim of the wheel and areconnected, together at their extremities by a metallic counter-plate riveted thereto.

According to the present invention said strips are linked together by simply hooking them in such manner as to permit of a slight almost insignificant and that in consequence there is no need toleaverconsiderable playbetween them. V

According to a characteristic feature of 7 the invention, the strips are connected t0-' gether by providing one edge of each'strip with a hook at one edge and a slot at its opposite edge in such wise that the hookof one strip shall slip into the slotof the next, succ'eeding'strip, the slots being of sufficient, width to allow of slight play of the hooks and a relative displacement of the strips.

According to -one embodimentiof the in- V vention thehooks and slots are formed'on plates separate from the strips, said plates being secured to'the stripsjby any suitable means such as rivets,bolts and the like.

in the rim, the end of each extremity being The invention consists furthermore in bending back the ends ofvthe strips so ascto forin' vprotuberances constituting vbeads of requisite dimensions to be lodged, and hooked secured by riveting to the stripitself.

i Accord inq' to another embodiment of the IlnYQIltlQInl31Q extremities oft-he strips area,

, sion.

hooking plates;

"jecting poi'tions'passing through apertures of the strip and all the strips of the tire 7 being connected together by means, of rods which successively pass I through all fthe beads situated on the 'sa-melside' of, the tire,

in order-that the tire may be applied to a.

rim having a peripheral groove or depres According to the invention the provided witha tread-bandheld in position by the hooking plates, salient ledges being for this purpose formedonthe edges of said plates, said tread-band be ng made either in one piece or in several pieces corresponding to the number of strips provided.

According tea/constructional form of the including a plate which is lodged and kept 1 in place. between thesalientledges of the With a viewto rendering the strips-more iiexible, springs of any suitable form are inserted between the hooking 'plates and stripsfthe whole formed by tlie'pressed plate,

the hooking plateand the spring,being se-:

cured to the strip by means .of tWo or more fixing rivets located along therinedian line,

of the pressed plate;

Accordingito a modified construction, the tread-band is constituted by a rubber band coveringtlie hooking plates andhaving pro- 7 tween each hookingfplate ,and the. correover cut out, at the placeswherethe hooks and slots are located.

a. i in the .said'hooking-plates so as 'to- CO1T1 Q .lO6-

, Finally, the sheath whichiis inserted between the ;tire and the inner tube may be arranged sothat ts edges overlap, Embodiments of the invention are illus trated, but merely by Way of example in the accompanying drawings,

In these drawings; I

Figyl is a perspective view o-f a complete Fig. 2 shows in ,sid'eelevation ,part'of a tire according to the invention mounted onstrip made according; to the -inven-;

a beadedriin, part Ofiathfilll'fl being shown Fig. 3 is a view similar to Fig. 2 showing the tire as applied to a rnn having a peripheral groove or depression.

Fig. 1 isa cross-sectional view of a tire according to the invention, adapted to be mountedon a cloncher rim.

plates on the tire. v

Fi 71s a tragmcntary plan View of a Fig. is a similar view to that of Fig. 4 of a tire adapted to be mounted on a run having a peripheral grove or depression.

F 6 is a detail View showing in perspective the arrangement of ,tlie ,ribbed "tire with a rubber treadband. Fig. 8 1s a section along the line 8-8 of As shown. in Figures 1, 2 and 4: of the drawings, the extremities of the strips 1 are bent back on themselves so as to form beads 2, the endmost part of each of these extremit es being furthermore bent over so'as to lie against the strip to which it is preferably secured by means of a rivet 3. This type of head is particularly useful when the" tlre is to be mounted on a beaded run,

but naturally would not be suitable to be mounted. on a rim having a peripheral groove or depression in its base or-upon possible to so'construct the tire that it might 'a" rim of which one of the edges is de-' tachable. For these rims, covers of the rod type are' lltl'llZGCl, having metal ing'out of the rim. It would of course be mounted either on av rim having a perlpheral groove or depression in its base, or

on a rim with a detachable edge. For this purpose, the extremities of the" strips -1 are not bent over toiorm beads of the char-1 A acter shown in Figs. 1 and 2, but'iare bent:

to formbeads of the character shown at 4 in Figures 3 7 body of the strip by'means of one or two rivets-3. KA rod 5 islthen passed through these beads 4;, preferably after the various elements making'up the tire have been asseinbled together, tire on a mandrel. I The-treadband of thistire according to and after mounting said I Figs. 1 to 6 is-constitutcd by pressed plates 7 6 havingtwo ribs of small height 7, each plate 6 being borne bya strip 1.

The strips 1- are all hooked together and,

to this end, the plates '6 are provided, on

opposite sides with slots and hooks. fPreferably, thcse'hooks are formed on plates 8 insertedrespectively between the strips 1 and the corresponding plates 6. 7 These plates 8 are each formed at one side witha'hook' 9 and-at the opposite side'with a slot 10.

I r In addition, the free'edges of the plates.8,-

thatis to saythose which do not include and -5, and are secured to the V v other sl ghtly at their edges and, in order to" protect theinner tube 20 against accidental either hook or slot, are turned up as shown 'mcans'oi' two or more fixing rivets 1 1- which will. only be sunk in the non-ribbed portion ofthe plate 6i. e. between the ribs 7. In this way a considerable measure ,of; suppleness and flexibility will be obtained, because the ribs 7 and plates 8 will have two elast c points of support on the strips.

According to the modified construction shown in Figures? and 8the saliant ledge 12 of the hooking plate 8 is of rounded 1U cross-section and houses theedges of a rubber band 15. The hooking. plates have openings 16' stamped out in them with in- 'wardly projecting walls 17 so as to receive salient portions 18 formed on the rubber band 15. These salient portions 18 project through and beyond the walls 17 of the openings '16 and their lower faces are a rounded so as to fit the peripheryoit' the strips 1 on which they are :made to bear.

Each hooking plate is securedto a strip 1 by means-of two or more rivets 14, as in the preceding case,'and' apertures 19are cut out of the rubber band in the vicinity of the" hooks in order to enable these latter toslidefreely in the slots.

It will be readilyunderstood that tlie 1 rubber band, which is kept in position by the hooking plates and I which, through the 7 medium of the salient portions 18, bears on thc'strips 1, forms'a unit inwhich thepropr erties of flexibility and firmness are combined.

As has been said, the strips 1 overlap each nipping between these strips, a sheath 21 formed by a canvas band, of which the "edges overlap at 22, is preferably interposed "between saidstrips and the inner tube; a The tire thus formedis easy to manufacture, since all the stripswhieh make it up are obtained'by cutting out and pressing, and it s absolutely reliable ow ng to the manner in which allts unit-s work in correlation wlth i one another: Moreover, there is no likelihood that theinner tube will be nipped owing to tliefact that there is no discontinuity The devices shown could of course be-subjeeted to ":various modifications in tidetail- Without departing from the spiritv of the invention.

I claim:

1. A wheel tire'comprising, in combina-" tion, a plurality of flexible metal outer strips adapted to enclose an inner tube, each extremityot each strip being adapted to engage in a rim-flange, a plate mounted on each of said strips, and means for hooking each ofsaid plates to the next succeeding one.

, 2. A Wheel tire comprising, lIrCOmblDZk' tion, a plurality of metal outer'strips adapted to enclose an inner tube, each extremity of each strip being bent for engagement into a r1m-fiange,a tread-band mounted on said strips, means for elastically supporting sald tread-band on said strips and means for plate, a slot formed in the opposite side of said plate for engagement With the hook of the next succeeding plate, salient ledges formed on each of said plates and a tread 1 band to said tire maintained in position-between the salient ledges on said plates. I

4. A Wheel tire comprising, in combination, a plurality of metal outer strips adaptedto enclose an inner tube, each extremity of each strip being bent for engagement into 7 a rim-flange, a plate mounted on each of said strips, a hook formed on oneside of said plate, a slot formed in the opposite'side of said plate for engagement with the hook of said strips.

tire comprising, in combina the next succeeding plate, salient ledges formed on each ofsaid-plates, a tread-band to said tire maintained in position between a the salient ledges-on said plates and an elasbetween said plates and tic support located 5, A Wheel. tire comprising, incombina-' tion a plurality of metal outer strips ada'pted to enclose an'inner tube,-each extremity of each strlp being bent for engagement into a rim-flange, a plate mounted on each of said strips, a hookformed on oneside of said plate, a slot t'ormed'in the opposite sidev of said plate. for engagement Withthe hook of the next succeeding plate, salient ledges formed on each of said plates, an elastic tread-band to said tire maintained in position between the salient ledges on said plates, and salient portions to said el'astic tread band adapted to bear against the'surii'ace of said metal strips over certain portions thereof, V V V I 6. A Wheel tirev comprising, in combination, aplurality of metal outer strips adapted to enclose an inner tube, each extremity of eachstrip being bent for engagement into arim-flange, a plate mounted on each of said strips, a hook formedon'one side of said plate, a slot'formed in the opposite side of saidplate for engagement with the hook of the next succeeding plate, salient ledges formed on each of said plates, an elastic treadband covering said platesand main tamed in position between the salient ledges thereof, depending bosses studded over said through Which said depending bosses 'pro-. ject and-bear against said strips.

,75 tread-band, and apertures in said plates.

NICOLAS sHERAssIMoFE' f 

